| 摘要 |
PROBLEM TO BE SOLVED: To provide a thermal printer module which can stably hold a platen roller.SOLUTION: A thermal printer module 30 comprises: a body frame 31; a thermal head; a platen roller 51; a roller insertion groove 35; a lock arm 61; a movement mechanism 80 which moves a rotation shaft Q; and an energization member of the lock arm 61. The movement mechanism 80 moves the central shaft Q between the lock position where rotation of the lock arm 61 is restricted in the holding state in which the lock arm 61 holds the platen roller 51 and the rotary position where the lock arm 61 freely rotates. The energization member energizes the lock arm 61 in a direction in which the lock arm 61 moves to the holding state from the releasing state where the platen roller 51 can be detached in the state where the central shaft Q is positioned at the rotary position while energizing the lock arm 61 in a direction in which the central shaft Q moves to the lock position from the rotary position in the holding state.SELECTED DRAWING: Figure 4 |
